Muffler.



A. S. GOLES.

MUFFLER. APPLICATION FILED DBO. 3, 1908. 929,656. Patented Aug. 3, 1909.

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UNITED sTATEs PATENToEEioE.

ANDREW s. Coins, or M AMARONECK, NEW YORK.

, MUFFLER.

Specification of Letters Patent. Application led Degember 3, 190B.

Patented Aug. 3, 1909.

serial No. 466,840.

ence being had to the accompanying drawings, in which- `Figure 1 illustrates a longitudinal vertical sectional Viewof the iuu'lller; Fig. 2 illustrates an endwise sectional view 'taken onv Y so arranged alsov that the. line l-l of Fig. 1 and looking in the direction of lie arrow; Fig. 3 illustrates a side elevation.

It is the purpose of this invention to construct a niutller on desirable mechanical. lines which shall be icxpensive in cost, ot relatively light weight, of reduced size relative to itsI elticiency and one in which there can be no back pressure, `and the structure is so arranged that either end ot' the inulller can Abe. connected with the engine exhaust. and, if desired, the. exhaust be passed through the. strut-.turey in two (littering ways. lt is a horn or whistle, with suitable cut-outs, can be readily connected o the inutller and thus operated by the exiaust.

1, 2, 3 and 4, represent cast metal diaphragnis. They may be made of cast iron,

or other suitable material.

5 is a pipe which we will assume in the present case connects with the engine exhaust. This pipe extends through the diaphragins 1, 2 and 3 and is threaded into a plug (i in the diaphragm 4. The. plug of course closes the end of the pipe. through a threaded block l7 also which is located in the diaphragm 1.

8 is a pipe the ends of which are ex- 1. anded or which may be threaded, as preferred, into the diaphragms Z and 3, and connects the apen chambers '9 and 10 at the two ends of the struct-ure.

11 is a pipe the saine in all respects as pipe 5, exiepting that the end toward the engine is closed by a plug 12 which is in all respects the same. as the plug 6, and the exhaust is at the opposite end ot t-lie pipe 13 where it passes through a similar block 14 in the diaphragm 4. The pipes 5 and 11 are perforated, as shown at 1.5 and 1G respectively at opposite ends` of the structure.

or cut-out It passes P lating inateri been said.

17 is a shell ot sheet steel or equivalent material which opposed faces of the diaphragins -3 and 4t and extends entirely around the chamber 10 and has deposited between its outer sui-tace and theI inner surface of the `outer shell' ot the structure 1'8 a suitable deposit of asbestos cement, 19, or equivalent material. The outer shell 18, which is preferably of strong sheet. steel, inclosesthe entire exterior of the structure and the ends ot this outer shell 18 are flanged as shown at. 2() upon the outside of the. first. diaphragm l, and also of the last diaphragm el, so as to a'lt'ord a iirin, durable outer covering or jacket tor the structure.

The chamber 9 is insulated iii the same manner as the chamber 10, that is to say: it has an interior steel casing 21, which is the same in all respects as the casing 17 and supported .in a. similar manner and it lso has a deposit, 22, of asbestos cement, or equivalent insulating material. toi-ated, as shown at 23, opposite the interior chamber 24 ot the structure.v

2.5 is a pipe threaded into the diaphragm 1 and which connects with the chamber 9 upon which a suitable horn, or whistle 26 (see Fig. 3) is connected, there being a suitable valve i 27, provided, whereby the -horn may be sounded as desired.

The operation is as follows: In the instance shown the exhaust comes from the engine in the direction of the arrow and enters the pipe 5. It passes through that pipe to 'its opposite end and thence escapes through the perforations 15 made therein and expands in the chamber 10. It thence asses from right to left through the pipe 8 and additionally expands in the chamber 9. It thence enters pipe 11 through the perfoi'ations 16 and passing through pipe 11 trom left to right is discharged at 13. The insu- 'al 19 and22 reduce the heat of the exterior shell and likewise materially reduce the noise, and the pcrforations 2.3 111 the exterior casing 418 allow free circulation of the airso as to additionally reduce temperatures. 0

The operation of the horn or whistle will be at once understood from what has already lt will be seen from the foregoing that Vmy mutiier embodies a number of advantageous lfeatures, that is to say: The tour ,d iaphragms are inexpensive parts, requiring is supported in rabbets on v The outer casing 18 is pereasily and inexpensively interior jackets are in place but before ap- The edges of the' chambers,

- chambers, and insulating material surround bought in little if anyv machining. The piping can be the general market of all ,sizes desired and all that is required to adapt them tov use in the apparatus is the perforations and threading. The exterior and the interior steel jackets are easily made and put together and ment and other insulating material can be applied when the and quickly plylng the exterior one. jackets' exterior and interior, may be crimped, welded or riveted together as preferred.

I call particular attention to the fact that either end of the muilier may be connected with the engine and also that if preferred the plugs 6 or l2 being removed the connection with the engine may be end, the opposite ends of the pipe being closed, and in this event the exhaust will pass through the perforations 15 or 16, as the case may be upon firsty entering the muffler instead 0fv passing longitudinally through it as above described.

'It will lbe obvious to those who are familiar with such matters that many modifithe details of conf struction without departing from the essentials of the invention. I limit myself to the details.

claim:

1. A muffler divided interiorly into three chambers, pipes for conducting the exhaust extending longitudinally through the structure each having perforationsl in one of the en'd chambers anda pipe connecting the two end chambers. 2. A muflier divided interiorly in to three chambers, pipes for conducting the exhaust extending longitudinally throughthe struc-` ture and each opening into one of the end chambers and a pipe connecting the two end chambers. l L f 3. A muffler divided interiorly into three chambers, pipes for conducting the exhaust extending longitudinally through t-he strucwhich open into one of the end `a pipe connecting the two end chambers and a pipe tapped into one of the chambers to which a horn or whistle may be connected.

4. A muffler divided interiorlyinto three extending longitudinally' through .the structure each connecting with one of the end ing the end chambers. l

5. A muliier divided interiorly into three chambers, an exterior casing inclosing all the chambens, insulating material surrounding the two end chambers and perforations in` the asbestos ce# made at that therefore do not chambers having a plpes for conducting the exhaust j name to this terior casing oppositethe central chamber,

Yplpes for conducting the exhaust extending respectivelythrough one bf the end chambers 'and the central chamber and opening into the opposite end chamber.

7.`A mutlier divided interiorly into three chambers, an exterior casing inclosing all the chambers, insulating material surrounding thetwo end chambers, perforations in ,the

g opposite the I centrall exterior casing opposite the central chamber,

pipes for conducting the exhaust extending respectively through one of the end chambers and the central chamber and opening into the opposite end chamber and a pipe tapped into one of the chambers to which a horn or Whistle may be connected.

8. A muiier embodying four diaphragms which divide its interior into three separate chambers, the two end chambers being ex-A pansion spaces and the interior chamber thc cooling section.

9. A mutller embodying four diaphragms which divide its interior into three chambers, insulating material surrounding the two end chambers, a perforated jacket surrounding the interior chamber and two pipes which respectively extend through one of the end chambers and the central chamber and discharge into the opposite end chamber and another pipe connectinfr the two end chambers through the centra chamber.

105A muflier embodying two end cham-i bers having insulating material surrounding them, and another chamber between the end chambers having -a perforated jacket and 11. A mufller embodying two end chambers having insulating material surrounding them, and another chamber between the end perforated jacket and exhaust from the engine into one of the chambers, thence into the other and thence to the point of discharge, and a pipe tapped into one of the end chambers to which a horn or whistle may be connected.

In testimony whereof I have signed my specification in the presence of two subscribing witnesses.

ANDREW S. GOLES.

means to convey the Witnesses:

F. M. DoUsBAcH, -PHILLIrs ABBOTT. 

